Disposable pin and cup with reuseable stem and collar for blood coagulation analyzer
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United States of America Patent
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Jun 29, 1993
Issued Date -
N/A
app pub date -
May 20, 1991
filing date -
Jun 19, 1989
priority date (Note) -
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Abstract
An instrument for measuring the coagulation characteristics of whole blood samples is provided with disposable parts for contacting the blood. The pin has a blood-compatible plastic sleeve surrounding a metal stem which weights the pin assembly so it sinks into the blood sample. The metal stem also engages into the pin suspension apparatus of the instrument. A blood-compatible plastic cup receives the blood sample to be tested, and is surrounded by a metal collar to transfer heat to the cup for the time required for a test. The plastic surfaces which contact the blood sample are slightly roughened, to a matte finish, to improve adhesion so as to approximate the results obtained with stainless steel pins and cups.
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